Elementary text-book of zoology (1884) Elementary text-book of zoology elementarytextbo0101clau Year: 1884 FIG. 92.— Sexual organs of a Pteropod (Cymbulia) (after Gegenbaur.) a, Zd, hermaphrodite gland with common duct; Us, receptaculum seminis ; U, uterus. I, Acinus of the hermaphrodite gland of the same. 0, ova ; S, spermatozoa.

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